A
Alfa Time Zone
Military
UTC+1
Etc/GMT-1
No DST
—
—
Australian Central Daylight Time
Oceania
UTC+10:30
Australia/Adelaide(2)
DST Active (mixed)
ACDT started: October 5, 2025, 3:00 am (clocks forward to 4:00 am)
ACDT ends: April 5, 2026, 2:00 am (clocks back to 2:00 am ACST)
ACDT ends: April 5, 2026, 2:00 am
Australian Central Standard Time
Oceania
UTC+9:30
Australia/Adelaide(3)
DST Active (mixed)
ACST ended: October 5, 2025 at 3:00 am (ACDT started)
ACST starts: April 5, 2026, 2:00 am (clocks back to 2:00 am ACDT)
ACDT ends: April 5, 2026, 2:00 am
Acre Time
South America
UTC-5
America/Eirunepe(2)
No DST
—
—
ACWST
Oceania
UTC+8:45
Australia/Eucla
No DST
—
—
Atlantic Daylight Time
North America, Atlantic
UTC-3
America/Glace_Bay(6)
Standard Time (mixed)
ADT ended November 2, 2025 at 1:00 am, now observing AST
ADT begins: March 8, 2026, 2:00 am (clocks forward to 3:00 am)
ADT begins: March 8, 2026, 2:00 am (clocks forward to 3:00 am)
Australian Eastern Daylight Time
Oceania
UTC+11
Australia/Hobart(3)
DST Active (mixed)
AEDT started: October 5, 2025, 3:00 am (clocks forward to 4:00 am)
AEDT ends: April 5, 2026, 2:00 am (clocks back to 2:00 am AEST)
AEDT ends: April 5, 2026, 2:00 am
Australian Eastern Standard Time
Oceania
UTC+10
Australia/Brisbane(5)
No DST
—
—
Afghanistan Time
Asia
UTC+4:30
Asia/Kabul
No DST
—
—
Alaska Daylight Time
North America
UTC-8
America/Anchorage(5)
Standard Time
AKDT ended November 2, 2025 at 1:00 am, now observing AKST
AKDT begins: March 8, 2026, 2:00 am (clocks forward to 3:00 am)
AKDT begins: March 8, 2026, 2:00 am (clocks forward to 3:00 am)
Alaska Standard Time
North America
UTC-9
America/Anchorage(6)
Standard Time
AKST started: November 2, 2025 at 1:00 am (AKDT ended)
AKST ends: March 8, 2026, 2:00 am (next AKDT begins, clocks forward to 3:00 am)
AKDT begins: March 8, 2026, 2:00 am (clocks forward to 3:00 am)